netdev - Re: [PATCH net-next v4 2/2] net: ethernet: socionext: add AVE ethernet driver

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Message-ID: <201712031142.jS4vt9Ur%fengguang.wu@intel.com>
Date:   Sun, 3 Dec 2017 11:37:22 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
Cc:     kbuild-all@...org, netdev@...r.kernel.org,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Masami Hiramatsu <masami.hiramatsu@...aro.org>,
        Jassi Brar <jaswinder.singh@...aro.org>,
        Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
Subject: Re: [PATCH net-next v4 2/2] net: ethernet: socionext: add AVE
 ethernet driver

Hi Kunihiko,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Kunihiko-Hayashi/dt-bindings-net-add-DT-bindings-for-Socionext-UniPhier-AVE/20171203-095248
config: alpha-allyesconfig (attached as .config)
compiler: alpha-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=alpha 

All warnings (new ones prefixed by >>):

   drivers/net/ethernet/socionext/sni_ave.c: In function 'ave_pfsel_set_promisc':
>> drivers/net/ethernet/socionext/sni_ave.c:172:27: warning: large integer implicitly truncated to unsigned type [-Woverflow]
    #define AVE_PFMBYTE_MASK0 (~GENMASK(7, 6))
                              ^
>> drivers/net/ethernet/socionext/sni_ave.c:1046:9: note: in expansion of macro 'AVE_PFMBYTE_MASK0'
     writel(AVE_PFMBYTE_MASK0, priv->base + AVE_PFMBYTE(entry));
            ^~~~~~~~~~~~~~~~~

vim +172 drivers/net/ethernet/socionext/sni_ave.c

   170	
   171	/* Packet filter */
 > 172	#define AVE_PFMBYTE_MASK0	(~GENMASK(7, 6))
   173	#define AVE_PFMBYTE_MASK1	GENMASK(25, 0)
   174	#define AVE_PFMBIT_MASK		GENMASK(15, 0)
   175	

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